Abstract: In a torsionally rigid, elastically flexible shaft coupling having at least one elastic disk disposed at right angles to the axis of rotation, cams on both coupling halves act alternately on both sides of the disk. In order to improve the loading capacity of the connection of the disk with the cams of both coupling halves by a multi-section design of this connection and in order to increase the transmitting capacity and the flexibility, the shaft coupling has the following characteristics:(a) the disk is constructed as a ring,(b) the points of application of the cams of both coupling halves on the annular disk lie at least approximately on one radius, the said cams surrounding the annular disk on both sides.

Abstract: In a torsionally rigid, elastically flexible shaft coupling at least two membranes are provided as transmission elements, which, on the inner and outer edge, have regularly spaced bores for clamping screws on the two coupling halves. In the intermediate area the membranes are provided with uniformly spaced openings. In order to increase the loading capacity of the shaft coupling, as well as to render possible the checking of the proper functioning of the membranes without dismantling them, the membranes are mutually offset by a fraction of the spacing of their openings. Moreover the fixing bores in a sector, which is equivalent to at the most half that of the openings, are arranged so that the bores for the clamping screws are aligned.

Abstract: A shaft coupling which is torsionally stiff yet capable of being elastically bent having guides arranged between two coupling halves at right angles to the axis of rotation in the form of thin-walled plates. Their overlapping end sections assigned to one another being alternately fixed to the coupling halves between tightening washers. So as to reduce its stiffness under flexure, the front side nearest the plate of one tightening washer supported against the corresponding coupling half has a middle section running radially and intersecting the extended axis of rotation at least more or less obliquely, which passes over on both sides into flat zones extending at right angles to the axis of rotation, so that the middle planes of the plates running on both sides of the tightening washer lie in a common plane.